The George Washington statue in front of the Independence Hall in Philadelphia, Pennsylvania

Weather in December

December is the official beginning of winter in Philadelphia. The weather is characterized by low temperature in the range of 30°F (-1.1°C) and 44.8°F (7.1°C). The nights get colder, with the temperature occasionally dropping below 25°F (-3.9°C).The cold winter winds are present throughout December, and warm winter clothing is essential. Most crowds clear out of the streets and only a few people can be found basking in the four hours of sunshine per day. With an average of two rainfall days in December, snowfall accumulates to 3.4" (86.4mm) as the month progresses. December records 3.6" (91.4mm) of rainfall fetched from approximately ten and a half days. For a day out, packing an umbrella is advised.[Resources]